/* ─── Base & Utilities ─── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { margin: 0; }

  /* ─── Selection ─── */
  ::selection { background: #0d9488; color: #f8fafc; }

  /* ─── Navigation ─── */
  .nav-link { position: relative; }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 8px;
    right: 8px;
    height: 1.5px;
    background: #14b8a6;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.25s ease;
  }
  .nav-link:hover::after { transform: scaleX(1); transform-origin: left; }

  /* ─── Menu Cards ─── */
  .menu-card { cursor: default; }

  /* ─── Scroll Reveal ─── */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }

  /* ─── Reduced Motion ─── */
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .menu-card img { transition: none; }
    .menu-card:hover img { transform: none; }
  }

  /* ─── Form Focus Ring ─── */
  input:focus, select:focus, textarea:focus {
    outline: none;
  }

  /* ─── Mobile Menu Animation ─── */
  #mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  #mobile-menu.open {
    max-height: 320px;
  }

  /* ─── Header Scroll State ─── */
  #site-header.scrolled {
    box-shadow: 0 1px 0 rgba(2, 6, 23, 0.3);
  }

  /* ─── Responsive ─── */
  @media (max-width: 639px) {
    #hero h1 { font-size: 2.5rem; }
    .font-display { line-height: 1.1; }
  }
  @media (min-width: 640px) and (max-width: 767px) {
    #hero h1 { font-size: 3rem; }
  }
  @media (min-width: 1024px) {
    #hero h1 { font-size: 4.5rem; }
  }
  @media (min-width: 1280px) {
    #hero h1 { font-size: 5rem; }
  }